I know similar things have been asked before but the responses there do not seem to work for me so I wanna give this another try. I like editing code in vim in a terminal. I set the screen transparent black. I would love to have a similar set-up in Mathematica. I know how to make the screen black but I do not seem to achieve making it transparent. So, can I make a notebook look black and transparent?
I'm not sure that you can do it natively, but you can try programs like this one: windowtop.
In alternative you can use Mathematica in a terminal, for example, in cmd:
"C:\Program Files\Wolfram Research\Mathematica\12.0\math.exe"
& "C:\Program Files\Wolfram Research\Mathematica\12.0\math.exe"
You cannot see any graphics this way, though...